(typescript) move some files to strict mode (#2403)

packages/desktop-client/src/components/FatalError.tsx

packages/desktop-client/src/components/GlobalKeys.ts

packages/desktop-client/src/components/accounts/Account.jsx

...es/desktop-client/src/components/manager/ImportActual.tsx

...ges/desktop-client/src/components/manager/ImportYNAB4.tsx

...ges/desktop-client/src/components/manager/ImportYNAB5.tsx

...s/desktop-client/src/components/manager/ManagementApp.jsx

...sktop-client/src/components/modals/ImportTransactions.jsx

packages/desktop-client/src/components/settings/Export.tsx

...ages/desktop-client/src/components/settings/FixSplits.tsx

packages/desktop-client/src/components/settings/Global.tsx

packages/desktop-client/src/components/settings/Reset.tsx

packages/desktop-client/src/components/settings/index.tsx

packages/desktop-client/src/gocardless.ts

packages/desktop-client/src/hooks/useFeatureFlag.ts

packages/desktop-client/src/plaid.js

packages/desktop-client/src/tokens.ts

packages/desktop-client/src/util/versions.ts

upcoming-release-notes/2403.md